Process for soldering chain-links.



FESSLER, OF PFORZHEIM, GERMAN].

rt r wri e. m ,qe ig iy w iii 5? li il libido P36531155: F93 SQLDEBINGUI-TAIN-JLINKS.

3%. se eee.

Griginal application filled July 11, $57, Serial i forzheim, Germany,have invented certain newsned useful lm rovements in Processes forSoldering Chemo mks, of which the fol lowing is e specification.

his application is adivision of an appliestion for patent filed by meduly 11, 1907; Serial No. 383,361.

The present invention relates to the menu'- fscture of chains, andmoreespecially of ornsmchtsl chains of all kinds from wire provided with ecore of solder, and the invention has reference in particular to eprocess of continuously shutting the joints of the links of such chains.

According to one Well known process of manufacturing chains of thisdescription, the cored Wire links to be separately soldered are wettedwith a soldering fluid. (deoxydising agent) end are then united byh'eicg heated to the ziielting point of the'solder by passage throughthe flame of s Bunsen burner or the like. The greet drawback of thismethod is that adjacent links frequently become soldered together owingto the solder oozing out and overilow'ig. There is smother process,which however, only he used with real advantage in the case relat elylarge obsuch parts of iiiechiiies or bicycles. With this process theertic ore first immersed in t soldering l'hiid, end the crystals or"soldering salt which remain sfter evooors-. tion of the )lvent thenremoved. Herehpoh a protective coating; applied to the places which arenot soldered (tl joint itself being left exposed) and the article thendipped into liquid solder. This method, however, is not practicable forcores wire chains, Whose links must he shot sepcretely. For owing to thesmallness of the links and otlierrcssons, it would be c" "rem-slydilllcult to keep the ro ithe protoc e Dittllag, to

" solder; end the I pecification of Letters Patent.

Patented June 16, 1908.

filo. 383,381. Divided and this application filed December 19. 1&07.

Serial No. 1,1 39.

the links are first submitted to a number oi preparatory operations; noattention has to be ,osid to the joint, since owing to the use of coredWire the solder is always at the right lace. 'lhereupon, to avoidadjacent links gettii'ig soldered together, all ol the links, ineludingthe oints, prior to being heated are In proceeding according to my newprocess coated with e protective mass, whereby continuous, simplemechanical, wholesale eoldoring of the links is made possible. l or hisurpose e piecev of chain of solder-cored wire inks, of any desiredlength, is drawn tlx rough s deoxidizing agent, to prevent oxidation ofthe metal during the soldering operation. lit is then moved to and froover, or p sscd shove, the flame of 2. burner, until the solvon t isevaporated. The links now present it layer of dry soldering saltcrystals. Since, however, to obtain s clean soldered joint ithoutdirtying the link, only the eetuol joint feces have to he provided withthe soldering agent, the soldering'selt crys tsls, with the exception ofthose at the joint, must be removec. For this purpose the links bymutual rubbing sndscouriiig' ore mech:micall3 cleansed of the crust ofsalt, so that the sol dering agent remains at the joint slime, which isnot eilected by this treatment.

In ordcrto prevent the links from. heconv in; united, or soldered toeach other. by the solder Which oozes out or overlies surface of thelinks nowcleonsed from the soldering agent is coated with it PIOllCllTfmess, the entire chain, holorx', passed through a, mess which lOl us tostruct soldering, no special precaution he token respecting the oiiits.lit hecessery for the chain to he pose the llsmc of a burner or solderinin the case of large strong links t hlowpipe items, whereby the linksare to such teiiipcretnro that llw solder melts and in .velhknown mannerends to he shut.

The hrocess l C-illll-lllllfill ol' the links ol :2,

c-ir in well v u 1 o v a soldenng fluld, es apomtmg. the, adhenng Intestlmony'whereo'i I affix my slgnature mmsfiure, removing the soldcnngsalt crys- 1n presence 0t two wltnesses. 1 balsa irfim the n, )H; X 5n0h fan of th 1: I I: 141i, (1 L1: L1 6 1 C 1" 8 omm, passmg the (mamuhrough a proteutlve 4 and heatniag the chain. untll the coreVvltnesses: melts and shuts the omts, substant ally as FRANZ ANTONHUBLOGH,

dmcribed. 7 I UARL- W. SGHMITT.

